Documentation
¶
Index ¶
- Constants
- Variables
- func AddSelfHostedPrefix(componentName string) string
- func CreateTempDirForKubeadm(dirName string) (string, error)
- func EtcdSupportedVersion(versionString string) (*version.Version, error)
- func GetAdminKubeConfigPath() string
- func GetDNSIP(svcSubnet string) (net.IP, error)
- func GetStaticPodDirectory() string
- func GetStaticPodFilepath(componentName, manifestsDir string) string
Constants ¶
const ( // ManifestsSubDirName defines directory name to store manifests ManifestsSubDirName = "manifests" // TempDirForKubeadm defines temporary directory for kubeadm TempDirForKubeadm = "/etc/kubernetes/tmp" // CACertAndKeyBaseName defines certificate authority base name CACertAndKeyBaseName = "ca" // CACertName defines certificate name CACertName = "ca.crt" // CAKeyName defines certificate name CAKeyName = "ca.key" // APIServerCertAndKeyBaseName defines API's server certificate and key base name APIServerCertAndKeyBaseName = "apiserver" // APIServerCertName defines API's server certificate name APIServerCertName = "apiserver.crt" // APIServerKeyName defines API's server key name APIServerKeyName = "apiserver.key" // APIServerCertCommonName defines API's server certificate common name (CN) APIServerCertCommonName = "kube-apiserver" // APIServerKubeletClientCertAndKeyBaseName defines kubelet client certificate and key base name APIServerKubeletClientCertAndKeyBaseName = "apiserver-kubelet-client" // APIServerKubeletClientCertName defines kubelet client certificate name APIServerKubeletClientCertName = "apiserver-kubelet-client.crt" // APIServerKubeletClientKeyName defines kubelet client key name APIServerKubeletClientKeyName = "apiserver-kubelet-client.key" // APIServerKubeletClientCertCommonName defines kubelet client certificate common name (CN) APIServerKubeletClientCertCommonName = "kube-apiserver-kubelet-client" // ServiceAccountKeyBaseName defines SA key base name ServiceAccountKeyBaseName = "sa" // ServiceAccountPublicKeyName defines SA public key base name ServiceAccountPublicKeyName = "sa.pub" // ServiceAccountPrivateKeyName defines SA private key base name ServiceAccountPrivateKeyName = "sa.key" // FrontProxyCACertAndKeyBaseName defines front proxy CA certificate and key base name FrontProxyCACertAndKeyBaseName = "front-proxy-ca" // FrontProxyCACertName defines front proxy CA certificate name FrontProxyCACertName = "front-proxy-ca.crt" // FrontProxyCAKeyName defines front proxy CA key name FrontProxyCAKeyName = "front-proxy-ca.key" // FrontProxyClientCertAndKeyBaseName defines front proxy certificate and key base name FrontProxyClientCertAndKeyBaseName = "front-proxy-client" // FrontProxyClientCertName defines front proxy certificate name FrontProxyClientCertName = "front-proxy-client.crt" // FrontProxyClientKeyName defines front proxy key name FrontProxyClientKeyName = "front-proxy-client.key" // FrontProxyClientCertCommonName defines front proxy certificate common name FrontProxyClientCertCommonName = "front-proxy-client" //used as subject.commonname attribute (CN) // AdminKubeConfigFileName defines name for the KubeConfig aimed to be used by the superuser/admin of the cluster AdminKubeConfigFileName = "admin.conf" // KubeletBootstrapKubeConfigFileName defines the file name for the KubeConfig that the kubelet will use to do // the TLS bootstrap to get itself an unique credential KubeletBootstrapKubeConfigFileName = "bootstrap-kubelet.conf" // KubeletKubeConfigFileName defines the file name for the KubeConfig that the master kubelet will use for talking // to the API server KubeletKubeConfigFileName = "kubelet.conf" // ControllerManagerKubeConfigFileName defines the file name for the controller manager's KubeConfig file ControllerManagerKubeConfigFileName = "controller-manager.conf" // SchedulerKubeConfigFileName defines the file name for the scheduler's KubeConfig file SchedulerKubeConfigFileName = "scheduler.conf" // ControllerManagerUser defines the well-known user the controller-manager should be authenticated as ControllerManagerUser = "system:kube-controller-manager" // SchedulerUser defines the well-known user the scheduler should be authenticated as SchedulerUser = "system:kube-scheduler" // MastersGroup defines the well-known group for the apiservers. This group is also superuser by default // (i.e. bound to the cluster-admin ClusterRole) MastersGroup = "system:masters" // NodesGroup defines the well-known group for all nodes. NodesGroup = "system:nodes" // NodesClusterRoleBinding defines the well-known ClusterRoleBinding which binds the too permissive system:node // ClusterRole to the system:nodes group. Since kubeadm is using the Node Authorizer, this ClusterRoleBinding's // system:nodes group subject is removed if present. NodesClusterRoleBinding = "system:node" // KubeletBaseConfigMapRoleName defines the base kubelet configuration ConfigMap. KubeletBaseConfigMapRoleName = "kubeadm:kubelet-base-configmap" // APICallRetryInterval defines how long kubeadm should wait before retrying a failed API operation APICallRetryInterval = 500 * time.Millisecond // DiscoveryRetryInterval specifies how long kubeadm should wait before retrying to connect to the master when doing discovery DiscoveryRetryInterval = 5 * time.Second // MarkMasterTimeout specifies how long kubeadm should wait for applying the label and taint on the master before timing out MarkMasterTimeout = 2 * time.Minute // UpdateNodeTimeout specifies how long kubeadm should wait for updating node with the initial remote configuration of kubelet before timing out UpdateNodeTimeout = 2 * time.Minute // MinimumAddressesInServiceSubnet defines minimum amount of nodes the Service subnet should allow. // We need at least ten, because the DNS service is always at the tenth cluster clusterIP MinimumAddressesInServiceSubnet = 10 // DefaultTokenDuration specifies the default amount of time that a bootstrap token will be valid // Default behaviour is 24 hours DefaultTokenDuration = 24 * time.Hour // LabelNodeRoleMaster specifies that a node is a master // This is a duplicate definition of the constant in pkg/controller/service/service_controller.go LabelNodeRoleMaster = "node-role.kubernetes.io/master" // MasterConfigurationConfigMap specifies in what ConfigMap in the kube-system namespace the `kubeadm init` configuration should be stored MasterConfigurationConfigMap = "kubeadm-config" // MasterConfigurationConfigMapKey specifies in what ConfigMap key the master configuration should be stored MasterConfigurationConfigMapKey = "MasterConfiguration" // KubeletBaseConfigurationConfigMap specifies in what ConfigMap in the kube-system namespace the initial remote configuration of kubelet should be stored KubeletBaseConfigurationConfigMap = "kubelet-base-config-1.9" // KubeletBaseConfigurationConfigMapKey specifies in what ConfigMap key the initial remote configuration of kubelet should be stored // TODO: Use the constant ("kubelet.config.k8s.io") defined in pkg/kubelet/kubeletconfig/util/keys/keys.go // after https://github.com/kubernetes/kubernetes/pull/53833 being merged. KubeletBaseConfigurationConfigMapKey = "kubelet" // KubeletBaseConfigurationDir specifies the directory on the node where stores the initial remote configuration of kubelet KubeletBaseConfigurationDir = "/var/lib/kubelet/config/init" // KubeletBaseConfigurationFile specifies the file name on the node which stores initial remote configuration of kubelet // TODO: Use the constant ("kubelet.config.k8s.io") defined in pkg/kubelet/kubeletconfig/util/keys/keys.go // after https://github.com/kubernetes/kubernetes/pull/53833 being merged. KubeletBaseConfigurationFile = "kubelet" // MinExternalEtcdVersion indicates minimum external etcd version which kubeadm supports MinExternalEtcdVersion = "3.0.14" // DefaultEtcdVersion indicates the default etcd version that kubeadm uses DefaultEtcdVersion = "3.1.11" // Etcd defines variable used internally when referring to etcd component Etcd = "etcd" // KubeAPIServer defines variable used internally when referring to kube-apiserver component KubeAPIServer = "kube-apiserver" // KubeControllerManager defines variable used internally when referring to kube-controller-manager component KubeControllerManager = "kube-controller-manager" // KubeScheduler defines variable used internally when referring to kube-scheduler component KubeScheduler = "kube-scheduler" // KubeProxy defines variable used internally when referring to kube-proxy component KubeProxy = "kube-proxy" // SelfHostingPrefix describes the prefix workloads that are self-hosted by kubeadm has SelfHostingPrefix = "self-hosted-" // KubeCertificatesVolumeName specifies the name for the Volume that is used for injecting certificates to control plane components (can be both a hostPath volume or a projected, all-in-one volume) KubeCertificatesVolumeName = "k8s-certs" // KubeConfigVolumeName specifies the name for the Volume that is used for injecting the kubeconfig to talk securely to the api server for a control plane component if applicable KubeConfigVolumeName = "kubeconfig" // NodeBootstrapTokenAuthGroup specifies which group a Node Bootstrap Token should be authenticated in NodeBootstrapTokenAuthGroup = "system:bootstrappers:kubeadm:default-node-token" // DefaultCIImageRepository points to image registry where CI uploads images from ci-cross build job DefaultCIImageRepository = "gcr.io/kubernetes-ci-images" // CoreDNS defines a variable used internally when referring to the CoreDNS addon for a cluster CoreDNS = "coredns" // KubeDNS defines a variable used internally when referring to the kube-dns addon for a cluster KubeDNS = "kube-dns" )
Variables ¶
var ( // MasterTaint is the taint to apply on the PodSpec for being able to run that Pod on the master MasterTaint = v1.Taint{ Key: LabelNodeRoleMaster, Effect: v1.TaintEffectNoSchedule, } // MasterToleration is the toleration to apply on the PodSpec for being able to run that Pod on the master MasterToleration = v1.Toleration{ Key: LabelNodeRoleMaster, Effect: v1.TaintEffectNoSchedule, } // AuthorizationPolicyPath defines the supported location of authorization policy file AuthorizationPolicyPath = filepath.Join(KubernetesDir, "abac_policy.json") // AuthorizationWebhookConfigPath defines the supported location of webhook config file AuthorizationWebhookConfigPath = filepath.Join(KubernetesDir, "webhook_authz.conf") // DefaultTokenUsages specifies the default functions a token will get DefaultTokenUsages = []string{"signing", "authentication"} // MasterComponents defines the master component names MasterComponents = []string{KubeAPIServer, KubeControllerManager, KubeScheduler} // MinimumControlPlaneVersion specifies the minimum control plane version kubeadm can deploy MinimumControlPlaneVersion = version.MustParseSemantic("v1.8.0") // MinimumKubeletVersion specifies the minimum version of kubelet which kubeadm supports MinimumKubeletVersion = version.MustParseSemantic("v1.8.0") // MinimumKubeProxyComponentConfigVersion specifies the minimum version for the kubeProxyComponent MinimumKubeProxyComponentConfigVersion = version.MustParseSemantic("v1.9.0-alpha.3") // SupportedEtcdVersion lists officially supported etcd versions with corresponding kubernetes releases SupportedEtcdVersion = map[uint8]string{ 8: "3.0.17", 9: "3.1.11", 10: "3.1.11", } )
var KubernetesDir = "/etc/kubernetes"
KubernetesDir is the directory kubernetes owns for storing various configuration files This semi-constant MUST NOT be modified during runtime. It's a variable solely for use in unit testing.
Functions ¶
func AddSelfHostedPrefix ¶ added in v1.8.8
AddSelfHostedPrefix adds the self-hosted- prefix to the component name
func CreateTempDirForKubeadm ¶ added in v1.8.8
CreateTempDirForKubeadm is a function that creates a temporary directory under /etc/kubernetes/tmp (not using /tmp as that would potentially be dangerous)
func EtcdSupportedVersion ¶ added in v1.9.0
EtcdSupportedVersion returns officially supported version of etcd for a specific kubernetes release if passed version is not listed, the function returns nil and an error
func GetAdminKubeConfigPath ¶ added in v1.8.8
func GetAdminKubeConfigPath() string
GetAdminKubeConfigPath returns the location on the disk where admin kubeconfig is located by default
func GetStaticPodDirectory ¶ added in v1.8.8
func GetStaticPodDirectory() string
GetStaticPodDirectory returns the location on the disk where the Static Pod should be present
func GetStaticPodFilepath ¶ added in v1.8.8
GetStaticPodFilepath returns the location on the disk where the Static Pod should be present
Types ¶
This section is empty.